请教一道作文的思路！很急

Please read this essay which I copy from www.manhattangmat.com. I wish it will help you.

The author's conclusion, that it is not the motorcycle X's engine roar and but something else, making motorcycle X's customers to not switch to cheaper copied version of motorcycle X, is refutable. In support of the conclusion author presents facts: firstly, the example of car industry, where quiter foreign cars sell atleast as well as American made cars. Secondly, author mentions the motorcycle X's advertisement, which highlight motorcycle X's durability and sleek lines instead of engine roar and basis that he questions that how can engine roar could be reason for customer not to switch to cheaper copied version of motorcycle X.Conclusion of the author based on flawed assumption that purchasing patterns of customers towards a car and motorcycle are same. Also he falsely assumes since television advertisement of motorcycle X does not focus on engine roar so engine roar cannot be the reason for customers to stick to the motorcycle X. The argument is unconvincing because it suffers from primarily two critical flaws.

Firstly, the assumption that since quites foreign cars sell as well as american made cars, so should be the motorcycle. Author overlooks the fact that while purchasing a car cusotmers might evaluate features of a car different than those of a motorcycle, while purchaing a motorcyclcle. While making such comparison author should have mentioned why purchaing of a car is similar to purchaing of a motorcycle? Since, author overlooks logical facts while stating example of car industry, so the assumption basis the same is completely flawed.

Secondly, the author assumes that since advertisement of the motorcycle X does not highlight engine roar so how can customer would be preferring motorcycle X over copied verision basis engine roar? Author overlooks the fact that motorcycle X is in business for 70 years and so possibly motorcycle X's engine roar does not need any introduction and so highlights motorcycle X's other features. If, while stating this fact author would have looked at familiraity of motorcycle X's customers with the product.How well versed the motorcycle X's customers are with the engine roar of the motorcyle X? And how the motorcycle X is recongnized among it's cusotmers. For example is the brand recongnition through enigne roar or something else? Since, author concludes in lack of lagical facts so the conclusion made by author is flawed.

Conlusively, in lack of evidences author concludes that the reason for customers of motorcycle X not switching to copied version is not engine roar and something else is flawed. Because argument leaves out several key issues so it's not sound and persuasive. So i disgree with the authors opinion that the reason for customers of motorcycle X not switching to copied version is not engine roar and something else basis stated facts